Method of weaving a pocketed tape

ABSTRACT

Woven pocketed curtain tape has spaced pockets which extend across the major part of its width. The base fabric between the pockets is woven from weft threads and two sheets of warp threads. The pockets are defined by ribs formed by a number of weft threads grouped together. The base fabric of the pockets is formed by the weft threads woven with one sheet of warp threads over the whole width of the tape. The cover fabric of the pockets is woven from the other sheet of warp threads and the weft threads over only a portion of the width of the tape. A number of tapes may be woven contiguously in a single fabric and then separated by cutting.

United States Patent Inventor Jean Antonin Philippe Gonon Saint-Just-Malmont Haute-Loire, France 790,675

Jan. 13, 1969 Feb. 16, 1971 Appl. No. Filed Patented METHOD OF WEAVING A POCKETED TAPE Primary Examiner-James Kee Chi Attorney-Waters, Roditi, Schwartz and Nissen ABSTRACT: Woven pocketed curtain tape has spaced pockets which extend across the major part of its width. The base fabric between the pockets is woven from weft threads and two sheets of warp threads. The pockets are defined by ribs formed by a number of weft threads grouped together. The base fabric of the pockets is formed by the weft threads woven with one sheet of warp threads over the whole width of the tape. Thecover fabric of the pockets is woven from the other sheet of warp threads and the weft threads over only a portion of the width of the tape. A number of tapes may be woven contiguously in a single fabric and then separated by cutting.

PATENTEU FEB 1 519m SHEET 2 BF 2 I process enabling the weaving of such latter are always, and necessarily, of lessfheight than the width of the tape which carries them. This is the same in various other'uses of pocketed tapes, both for tliose used in the:

domestic field as in industry. u e

The weaving of such pocketed tapes h'aisorily been possible up to the present on ribbon looms with one o'r iwo shuttles.

In the case of shuttle weaving, there isyvoveh, from the start ,of a pocket, that is to say from the beginning of the base fabric .of the tape, first of all, the upper part of the pocket o'ver'the whole of its width and over the whole b fits height then, making it return to the weft, there is woven,ov'er the whole width of the tape, the part situated under the pocket and, then, theend part of the said pocket is attached to the base fabric before continuing the weaving of the tape up to the following pocket. This method of weaving on tape looms is relatively long, hence only gives a low production, and has, moreover, the drawback of allowing the return of the weft thread to float freely inside each pocket between its exit at the end of the pocket and its connection in the base under the pocket, which creates very often an impediment on the introduction later of the suspension hook through this pocket.

It is an object of the present inventionto provide another pocketed tapeson ordi nary siik looms, or on those of the shuttleless" type, hence, with a much increased output. V.

This increase in production is, besides, particularly importantin the case of the use of self weldable synthetic fibers, considering that there is made possible the simultaneous weaving in large width of .a plurality of tapes which are later separated one from another by hot cutting in their intercalary 311. i p The process, the object of the presentinvention, applicable both to rigid tapes and to flexible ones, is essentially characterized in that,

under the, pocket, theseJweft threads are, through the move ment of the slay, assembled against one another in the shape of one or several ribs.

In a preferred embodiment, these weft threads taken in a same shed in the parts situated outside the pockets, are advantageously distributed into at least two groups situated'on each side of each pocket in extension of their lateral edges.

To practice this preferred embodiment,there is woven, on the commencement of each pocket, only a part of this pocket, then the part situated under the complete width of the pocket is woven and returning at the back to weave the complementary part of said pocket. t

In conventional manner, there are arranged two sheets of warp yarns, one for the base and the .other for the pockets, these two yarns working simultaneously in; the parts situated between pockets.

n the other hand, also in customary manner, the two parts of the pocket are woven successively with arrest of the loom regulator, this regulator only acting for the weaving of the parts situated beneath the pockets and between the pockets.

in order that the invention may be more fully understood two embodiments of the method of weaving pocketed tape according to the invention are described below, purely by way of illustrative and nonlimited examples, with reference to the ac companying diagrammatic drawings in which:

FIGS. .1, 2,3, 4 and 5 show schematically the various successive phases of one embodiment ofthe method of weaving according to the invention;

on weaving for the formation of the'pockets, v "the passage of the weft is .not limited tothe height of the FIG. 6 is a front view of a part of a tape produced-according to the present invention;

FIG. 7 shows, on enlarged scale, a pocket of the tape of FIG.

FIG. 8 is a schematic view of a second embodiment of the method illustrating the case of weaving in a largewidth several tapes side by side; and :1 1-5:: a FIG. 9 shows an example of a design patternofithe tape of 1 As shown in FlG. 1, after having made the'sheet of=the warp yarn l of the pockets and that of the warp yarn 2 of the base work together, over the'whole width of the tape, the part of the base warp yarn 2 situated under the pocket is maintained in lowered position and only the sheet warp yarn l is made to work to form only a part 3 of this pocket, such as over one half of its width (FIG. 2), the regulator being stopped.

It is made to return to the weft and, the regulator being set in operation, the part 4 situated under the complete width of the pocket (HO. 2), is woven over the whole width of the tape. I

Then returning behind to weave the second part 5 of the pocket, the regulator being stopped, this part 5 is connected at 6 to the preceding one 3.

The weaving is then resumed over the whole width of the tape causing the two sheets of the warp yarn 1 and 2 to work simultaneously and over a width 1 corresponding to the separation which must occur between two neighboring pockets. e

The various picks which have worked over the whole width of the tape are incorporated in the base fabric in their parts situated outside the pockets, but are left over the width of each of the parts of the pocket in the same shed, so that at the moment of weaving of the part 4 of the tape situated below the pocket, these picks are pushed by the slay and grouped against one another to'form two ribs 7 situated in the extension of the lateral edges of the pocket 3-5.

width of a plurality of tapes a-b-cetc... woven side by side and contiguous with one another, these tapes being separated from one another after weaving by cuts along the axes 0-0.

In the drawing of the design pattern of FIG. 9: the zones A and B correspond to the parts situated outside the pockets;

the zone C corresponds to the part of the tape in the part of the height of the pockets, that is to say in the part situated between the aforesaid zones A andB; zone D corresponds to a part of the weave between pockets;

zone E corresponds to the weaving of the first part of the pocket, the first stroke of the weft of the said pocket being situated at x and only the warp yarns of the pocket working, the part of the warp yarn of the base situated under the pocketremaining in lowered position;

zone F corresponds to weaving of the part situated under the pocket, only the weft yarns of the base working, the weft yarns of the pocket remaining in raised position;

' zone G corresponds to the weaving of the second part of the yarns of the base situated under the l. A method of weaving pocketed tape comprising extending the weft threads woven in the pockets across the whole width of the woven material, incorporating the weft threads on either side of the pockets into the base fabric, and grouping these weft threads by a sley to form one or more ribs extending 5 to each side of the pocket.

FIG. 8 shows the'case of a simultaneous weaving in large in lowered position and only the warp all variations thereof, as for example,

2. A method as claimed in claim 1, comprising weaving a plurality of tapes contiguous with one another simultaneously in a single fabric, and subsequently separating said tapes by cutting.

3. A method as claimed in claim 1 wherein the weft threads forming each pocket are grouped together to form two ribs in the area of the tape between each pocket, each rib containing the weft used in the weaving of one half of each pocket.

4. Pocketed tape comprising a woven base fabric formed of two sheets of warp threads initially woven together over the whole width of the tape together with weft threads, said weft 

1. A method of weaving pocketed tape comprising extending the weft threads woven in the pockets across the whole width of the woven material, incorporating the weft threads on either side of the pockets into the base fabric, and grouping these weft threads by a sley to form one or more ribs extending to each side of the pocket.
 2. A method as claimed in claim 1, comprising weaving a plurality of tapes contiguous with one another simultaneously in a single fabric, and subsequently separating said tapes by cutting.
 3. A method as claimed in claim 1 wherein the weft threads forming each pocket are grouped together to form two ribs in the area of the tape between each pocket, each rib containing the weft used in the weaving of one half of each pocket.
 4. Pocketed tape comprising a woven base fabric formed of two sheets of warp threads initially woven together over the whole width of the tape together with weft threads, said weft threads extending over the whole width of the tape, selected weft threads forming pockets and the weft threads forming the pockets being grouped together in two ribs in the areas of the tape between the pockets, each rib containing the weft threads for one half of each pocket, the pockets having a base formed from one sheet of warp threads and the weft threads, the other sheet of warp threads and the weft threads grouped as ribs outside the pockets being woven to form the pocket above the base. 